L-19, 27% from Hostetler Plans, 116" span

Joker 53150

Mmmmmmm, balsa.
Mentor
L-19 Bird Dog, 27% scale from Hostetler Plans, 116" span

The finish line for my Astro-Hog rescue & re-build is in sight, so I need to load up on balsa for another build. This one will be my most ambitious and largest build yet, a 27% scale Cessna L-19 Bird Dog. At 116" span the wing is about a foot longer than the big 1/4 scale Sig Cub I did, and the fuselage is at least that much longer as well.

This isn't my first L-19, I did a build thread on one HERE, although it was a much smaller. Building big has really consumed me lately, and I'm glad my wife is either very understanding or not very observant and hasn't said anything about the quickly growing collection of planes! :)

Here's a full-scale version of what I'm going to build:

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This is the fuselage for the L-19 I previously built, sitting on the fuselage plan page for the new one. As David would say, "It's HUUUUUUUUUGE!" Power will be a 50-ish cc gasser.

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(Stock photo from Hostetler's website)

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Looking through the two giant plan pages (each is about 36" x 96") I found a list of materials needed for each area of the build. This is nice, since if I build it section by section I won't completely de-forest a small nation! I'm going to start with the fuselage, vertical stab, and rudder.

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This is far from a good plan for a beginner! There is no printed manual or step-by-step instructions, only the diagrams and a few pictures. I guess some would call it a "builder's kit". It takes a little time looking at the drawings, but eventually I figure it out. Hopefully! :)

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He also includes suppliers for the important add-ons, like the cowl and gear.

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I've got wood! ;) So as stated, I'm starting with the fuselage and vertical surfaces, and here's the wood just for that. From Balsa USA it was just over $100 and arrived in two working days, not too bad! It's not cheap, but should give me a lot of building pleasure and is far cheaper in the long run than booze and hookers. After the fuse is about done I'll order up the wood for the wing. I'll also need to decide how much detail I'm going to add. I know I want landing lights, and probably navigation lights, but we'll see what else "must" be included.

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Joker 53150

Mmmmmmm, balsa.
Mentor
I ordered some goodies for the build, including some aids to cut and sand angles better. I'm aiming to better my game on the quality with this build. There are some specialty items I ordered which should help the scale appearance.

The Astro-Hog is now getting covered so hopefully I can get the L-19 started in the next few days!
 

PsyBorg

Wake up! Time to fly!
Well of all the women I have met I can not think of one that wouldn't take a model building hobby over Booze and Hookers any day of the year. Its cheaper by far and you are still close enough to pester if her mood dictates. :p
 

Joker 53150

Mmmmmmm, balsa.
Mentor
I'm going to try a little different build technique this time. In the past all construction was done on ceiling tiles, which hold pins extremely well. However, this plane is going to be way too large for that and I don't like the idea of multiple tiles since there is a good chance they won't be uniform thickness. Another option is to use drywall and build directly on that, but I'm going a different route and trying a magnetic surface. I've got a few sheets of steel large enough in my garage, and only need to cut them to size. Well, and get magnets. So I ordered a set of 100 on Amazon. A few companies make fixtures that use the magnets in creative ways, and I'll have to explore some options. But for now, the steel and magnets are a simple start.
 

PsyBorg

Wake up! Time to fly!
A friend of mine makes miniature scale buildings and furniture for gaming and he uses a steel tray and magnets for his projects and that works well. He also got some of those small and large metal paper clips. The ones that are spring steel and shaped like triangles that have the folding arms on each side you squeeze to open them up by.

He orders from a company called makers mark or something similar. (not the bourbon maker) I can ask him if you need suggestions.
 

willsonman

Builder Extraordinare
Mentor
I've seen the magnet work surface before and it looks to be a great idea. Alternatively, I've used a glass building surface before and if you are able, I've never had a model built more straight in my life. Either way I love watching your builds come together.
 

Joker 53150

Mmmmmmm, balsa.
Mentor
Glass is a good option as long as the table is flat, since it will bend a little before breaking. I didn't want to buy, transport, and hopefully not break a 2' x 6' (or longer?) piece of glass! I know my limitations. :)
 

TexMechsRobot

Posted a thousand or more times
A friend of mine makes miniature scale buildings and furniture for gaming and he uses a steel tray and magnets for his projects and that works well. He also got some of those small and large metal paper clips. The ones that are spring steel and shaped like triangles that have the folding arms on each side you squeeze to open them up by.

He orders from a company called makers mark or something similar. (not the bourbon maker) I can ask him if you need suggestions.

www.micromark.com?
 

Joker 53150

Mmmmmmm, balsa.
Mentor
That's the type of magnet I ordered, and I'm considering either building my own 90 degree towers or buying them. Maybe Laine from Laine's Planes would laser cut some for me. He also has some smaller 90 degree pieces that use 1/4" round magnets, and they're priced reasonably enough. Choices, choices! :) I just picked up some metal for the table tonight. I know I've got scrap sheet left in the garage from my days fabricating cars, so I started going through it. There were a bunch of smaller pieces hiding the big stuff hidden behind some shelving racks. I pulled the small stuff out of the way and then saw a nice big sheet, almost 4' x 8'. A big SHINY sheet. Shiny? In Wisconsin after sitting in a damp garage for 6 years? Dang, it's aluminum... :( But Menards has 2' x 4' 22 awg sheet that'll work fine. I'll end up using two butted together and cut to fit the work surface. They're very thin and will probably be glued to the back of the door/bench I'm using, so I can flip it over and use whichever side is better for the task at hand. There may be a tiny ridge where the sheets come together, but I've got enough metal working tools to flatten it and then a sanding disc will finish it off. A small depression doesn't bother me, but a raised section could be bad.
 

PsyBorg

Wake up! Time to fly!
My friend has a build plate he uses that has one side bent up 90 degrees to butt things against. That part has a movable "Arm" that is hinged to it so he can swing it around to various angles for making joints and square corners on things.
 

Joker 53150

Mmmmmmm, balsa.
Mentor
With this build I'm going to try a couple new tools to see if it helps me make better, stronger, and straighter planes. I'll admit that I've done some semi-half-assed stuff in the past, usually when the finish-line is in sight and I'm just sick of working on the plane and want to start something new. :eek: Hopefully I can restrain myself on this one, and just take it steady from start to finish.

So the tools are both by Fourmost, their miter saw and miter sander. Both are designed to give accurate and reproducible results. I haven't checked them both yet against a couple metal working angle gauges I've had for a while, which I know are accurate, but I still like what I see. The plan is to use the angle finders on the plans to determine cut angles, then use those gauges to set these pieces from Fourmost up to make & dress the cuts. Both tools are fairly small and won't take up too much room on the work bench. I also picked up a new miter box and miter saw, since my old ones were getting a bit beat up and dull.

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